Citation: Chaojian Xu, Juxin Yin, Sihong Wang, Yue Pan, Qianhe Zhang, Ningkang Xie, Shuo Yang, Shaowu Lv. Aerobic radical polymerization of hydrogels triggered by acetylacetone-transition metal self-initiation[J]. Chinese Chemical Letters, ;2025, 36(7): 111075. doi: 10.1016/j.cclet.2025.111075 shu

Aerobic radical polymerization of hydrogels triggered by acetylacetone-transition metal self-initiation

Chaojian Xu ^a ,
Juxin Yin ^{b, c, *,} ,
Sihong Wang ^a ,
Yue Pan ^a ,
Qianhe Zhang ^a ,
Ningkang Xie ^a ,
Shuo Yang ^a ,
Shaowu Lv ^{a, *,}

a.
Key Laboratory for Molecular Enzymology and Engineering of the Ministry of Education, School of Life Science, Jilin University, Changchun 130012, China
b.
School of Information and Electrical Engineering, Hangzhou City University, Hangzhou 310015, China
c.
Academy of Edge Intelligence, Hangzhou City University, Hangzhou 310015, China

yinjx@hzcu.edu.cn

lvsw@jlu.edu.cn

Received Date: 31 December 2024
Revised Date: 10 March 2025
Accepted Date: 12 March 2025
Available Online: 12 March 2025

Figures(5)

The performance of hydrogel radical polymerization under ambient conditions is a major challenge because oxygen is an effective radical quencher and the steps to remove or neutralize it are time consuming and laborious. A self-initiating system consisting of transition metals and acetylacetone has been successfully developed. The system is capable of initiating free radical polymerization of hydrogels at room temperature under aerobic conditions, which is attributed to carbon radicals generated by the oxidation of acetylacetone. Some of these carbon radicals reduce oxygen to generate hydroxyl radicals, which together induce self-coagulation of hydrogels. The polymerization system was effective for a variety of monomer and hydrogel swelling and shrinking schemes, and the reaction remained successful when exposed to saturated oxygen. In conclusion, the results demonstrate that the present strategy is an effective approach to addressing the challenge of deoxygenation in polymer synthesis, and provides a convenient method for synthesizing multifunctional hydrogels under ambient conditions.
- Oxygen,
- Radical polymerization,
- Hydrogels,
- Redox reactions,
- Acetylacetone,
- Transition metal
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